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> Helicopters & Parts > Helicopter Kits > Electric Helicopter Kits


RJX X-TRON 500 Electric Flybarless 3D Helicopter Kit

RJX X-TRON 500 Electric Flybarless 3D Helicopter Kit
RJX X-TRON 500 Electric Flybarless 3D Helicopter Kit

The RJX X-TRON 500 is a high performance flybarless electric helicopter kit built from high quality materials. It features a genuine carbon fiber main frame with aluminum bearing blocks, head and tail assemblies. The motor mount design incorporates the use of a bearing block for motor shaft support which eliminates any flex under high torque induced loads.

The CCPM direct servo linkage design eliminates the complications of a push/pull setup while enabling faster and more precise control reaction. The belt driven tail system offers easy adjustment and efficient operation. The main gear assembly features an integrated high torque rated one-way bearing. The top mounted ESC platform takes advantage of the main blade airflow for highly effective cooling.

The X-TRON 500 is a high quality, high performance flybarless helicopter kit at a great price!

• Flybarless rotor head
• Thrust bearings in both main and tail blade grips
• CCPM direct servo linkage
• Belt driven tail system
• Carbon fiber main frame
• Top mounted ESC platform
• High torque one-way bearing assembly
• Carbon fiber 70mm tail blades included


Length: 1185mm
Height: 267mm
Width: 210mm
Main Blade Length: 430mm (not included)
Tail Blade Length: 70mm (included)
Main Rotor Diameter: 980mm
Tail Rotor Diameter: 214mm
Motor Drive Gear: 14T/16T
Main Drive Gear: 177T
Autorotation Tail Drive Gear: 155T
Tail Drive Gear: 33T
Drive Gear Ratio: 11.06/12.64:1:4.7
Weight: 1900g~2000g

RJX X-TRON 500 Electric Flybarless 3D Helicopter Kit
RJX 70mm carbon fiber tail blades
All necessary hardware

Park size metal gear servo (cyclic control) x 3
Park size high-speed servo (tail control)
500 size 1600KV brushless outrunner heli motor
80A brushless ESC w/BEC
Flybarless system
420~430mm main blades
6S 2600~3000mAh lipoly battery
6ch or more radio system (transmitter and receiver)

PRODUCT ID: 178000034-0

Weight: 2400g
International Warehouse
Price  $242.20

  • Turnigy Brushless ESC 85A w/ 5A SBEC

    Combo Price: $39.69   IN STOCK

  • Turnigy AE-80A Brushless ESC

    Combo Price: $36.71   IN STOCK

  • HobbyKing YEP 80A (2~6S) SBEC Brushless Speed Controller

    Combo Price: $36.62   IN STOCK

  • Turnigy nano-tech 2700mah 6S 65~130C Lipo Pack

    Combo Price: $58.47   IN STOCK

  • Turnigy 2650mAh 6S 30C Lipo Pack

    Combo Price: $29.39   BACKORDER

  • Turnigy nano-tech 2600mah 6S 45~90C LiPoly Battery

    Combo Price: $48.53   IN STOCK

  • Turnigy nano-tech 2650mah 6S 45~90C Lipo Pack

    Combo Price: $47.51   IN STOCK

  • ZIPPY Compact 2700mAh 6S 35C Lipo Pack

    Combo Price: $33.94   IN STOCK

  • Turnigy™ TGY-393V Coreless HV/BB/MG Servo w/ Heat Sink 4.3kg / 0.10sec / 22.5g

    Combo Price: $20.16   IN STOCK

  • Turnigy™ TGY-390V Coreless HV/DS/MG Servo w/Heat Sink 5.4kg / 0.11sec / 22.5g

    Combo Price: $19.76   IN STOCK

  • RJX FS-0391HV Metal Gear Mid-Size Tail Servo Ultra High Speed 10.6kg / 0.03sec / 50g

    Combo Price: $69.95   IN STOCK

  • RJX FS-0390HV Hi-Torque Mini Servo 12.3kg/45g/0.053sec

    Combo Price: $70.95   IN STOCK

  • RJX FS-0390THV Hi-Speed Helicopter Mini Tail Servo 5.5kg/45g/0.03sec

    Combo Price: $70.95   BACKORDER

  • OrangeRx Futaba FASST Compatible 8Ch 2.4Ghz Receiver

    Combo Price: $29.45   IN STOCK

  • OrangeRx R620 DSM2 Compatible Full Range 6Ch 2.4Ghz Receiver w/Failsafe

    Combo Price: $12.91   BACKORDER

  • RJX FS-0391THV Metal Gear Digital Tail Servo Ultra High Speed 10.6kg / 0.03sec / 50g

    Combo Price: $72.95   IN STOCK

  • 425mm TIG Carbon Fiber Z-Weave Main Blades

    Combo Price: $22.66   IN STOCK

  • OrangeRx R710 DSM2 Compatible 7Ch w/Failsafe

    Combo Price: $17.95   BACKORDER

  • RJX Vector Green 70mm Carbon Fiber Tail Blades

    Combo Price: $12.95   IN STOCK

  • RJX Bluetooth Module for V-bar (Black)

    Combo Price: $24.96   IN STOCK

Further discounts available for registered & logged-in customers.

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Estimated factory delivery date;
 Customer rated
Total of 26 discussions.
Borja  3 points - 8/24/2015
When in europe warehouse ?
CARMELO  9 points - 8/4/2015
RJX - HOBBYKING, please take note that the kit is beins sold with the new tail box, which is especially made for the Vectron 520 which uses carbon tail tube INNER DIA 20 mms, but in the kit it comes the alu tube whick is 21 mms inner dia. so the tail box does not fix the tube, and it seems that RJX have not observed-noticed this mistake, which could be solved with a ring with inner dia 20 mms and outer dia. 21 mms, and for future buyers take also note that the tail beltcrack is left handed although in pics it shows right handed. nevertheless, these are minor mistakes that can be easily solve with a little efford from RJX, BUT in general the KIT is FABULOUS FANTASTIC, i believe is the best, logical and rational design ever assembled. Dont dude, if you want a heli, and you are experienced chopper, BUY IT you will not ever regret. Despite the minor mistakes , I HAVE TO GIVE A FIVE STARS plus for design, quality and PRICE.
 Egg Man 86 points
The left handed bellcrank is a change in the kit I think, the tailbox will work either way. The Xtreme 600 is the same way now with a left handed tail.
David724  16 points - 4/23/2015
Why is HK going out of business???
Egg Man  86 points - 3/19/2015
HK is still missing some key spare parts on this such as a complete pitch slider and the brass slider bushing. (if you need a pitch slider you have to order it from a certain other online RC shop in Hong Kong and hope they have it in stock) If HK doesn*t want to carry the full pitch slider they could just carry the bushing then you could just order all three parts and put it together.
Marcal  115 points - 3/8/2015
Would this ever be available in EU warehouse?
Customer Reviews
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Bausatz in der gewohnten RJX Qualität. Alle Baugruppen sauber in Tüten zum jeweiligen Bauabschnitt eingeordnet. Aluminiumteile und Carbonteile sind sehr sauber gefertigt. CFK Heckblätter liegen bei. Die Anleitung ist nicht enthalten, bekommt man aber im Internet. Der Bausatz ist die aktuelle V2 mit Akkurutsche vorne für einen besseren Schwerpunkt. Auf den Motorträger passen Motoren mit 25mm Lochabstand und M3 Schrauben. Die Haube sieht hammer aus und ist von Fusuno in der Farbe Rot/Silber. Heckservo halter für Standard 20mm/ oder Mini 15mm ist enthalten. Klare Kaufempfehlung, der beste 500er!

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After first 10 flights i can say this Heli is great, very powerful and exact to handle. Here are my settings: YEP 80A @ 70pcnt Govenor with Turnigy SK3- 1600KV will run 2050rpm (14T pinion). Flight time goes to 7min without any Problems, 2000mAh left out of 3000mAh (Turnigy 6S Nano Tech). Rpm range goes from 1000rpm (min.) to 2900rpm (max.)

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Kit muito bom... peças de alta qualidade... encaixes perfeitos... em voo muito imponente, forte e estável.... altamente recomendado...

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Excellent heli. . I highly recommend this one. . Build is a bit different then any other model I have done. So I really had to take my time with this one. . The end result was some outstanding flights. . Very quiet in flight. ( belted tail ) Great size heli to have some fun with. . The quality is there and you wont be disappointed. This heli is a steal at this price from HK.

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